The input that you're looking for is 66KK(4). Inputting 4 after 66KK is what puts Ayane back turned, and is the very reason why this string and BTPP6KK4 are very useful and safe on block.
66KK4 and BTPP6KK4 are +1 on block, and cannot be held or side stepped IF the first mid kick of 66KK4 is blocked on impact.
Example combos:
BT4K, BT6P, 66KK4, BT7K.
Oh heavy weights; BT4K, BTPP6KK4, BT7K.
I believe this is the answer you are seeking.
If you wish to know of anymore combos that use 66KK4, BT7K or BT6KK4, BT7K. They are listed within the OP of this Combo Discussion thread.
As for combos ending with 66H+K. You do the same thing with 66KK4, only except you do 66KK4 > 66H+K. Same applies for BTPP6KK4.